advised saying the letter "M". The skin under the lower lip will be taut with no air pocket. The lips do not overlap, nor do they roll in or out. The corners of the mouth are held firmly in place. To play with an extended range one should use a pivot, tongue arch and lip to lip compression.

According to Farkas the mouthpiece should have upper lip and lower lip (French horn), lower lip and upper lip (trumpet and cornet), and more latitude for lower brass (trombone, baritone, and tuba). For trumpet, some also advocate upper lip and